函数模板重载和实例化例题

// CPPTest.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include<fstream>
#include <iostream>
#include<string>
#include<cstring>
#include<cmath>
using namespace std;
template <class T>
T maxn(T *arr,int n) {
	T max=arr[0];
	for (int i = 1; i < n; i++) {
		if (arr[i] > max)
			max = arr[i];
	}

	return max;
}
template<>
 const char * maxn(const char *arr[], int n) {
	const char *p = arr[0];
	for (int i = 1; i < n; i++) {
		if (strcmp(p, arr[i]) < 0) {
			p = arr[i];
		}
	}

	return p;
}
int main() {
	
	int arri[6] = { 3,4,6,2,1,8 };
	double arrd[4] = { 1.1,2.2,3.3,4.4};
	const char * arrc[4] = { "Hello","How are you","Amercian","Zenith" };
	int max_i = maxn(arri,6);
	double max_d = maxn(arrd,4);
	const char *p = maxn(arrc, 4);
	cout << "max i=" << max_i << endl;
	cout << "max d=" << max_d << endl;
	cout << "max string=";
	for (; *p != 0; p++)
		cout << *p;

	cout << endl;

}